package com.shiku.utils;

import java.security.MessageDigest;
import java.util.Random;

/**
 * A class that provides easy Blowfish encryption.
 * <p>
 */
@SuppressWarnings("unused")
public class Blowfish {

	private static class BlowfishCBC extends BlowfishECB {

		// here we hold the CBC IV
		long m_lCBCIV;

		/**
		 * constructor, stores a zero CBC IV
		 * 
		 * @param bfkey
		 *            key material, up to MAXKEYLENGTH bytes
		 */
		public BlowfishCBC(byte[] bfkey) {
			super(bfkey);

			// store zero CBCB IV
			setCBCIV(0);
		}

		/**
		 * constructor
		 * 
		 * @param bfkey
		 *            key material, up to MAXKEYLENGTH bytes
		 * @param initCBCIV
		 *            the CBC IV (array with min. BLOCKSIZE bytes)
		 */
		public BlowfishCBC(byte[] bfkey, byte[] initCBCIV) {
			super(bfkey);

			// store the CBCB IV
			setCBCIV(initCBCIV);
		}

		/**
		 * constructor
		 * 
		 * @param bfkey
		 *            key material, up to MAXKEYLENGTH bytes
		 * @param lInitCBCIV
		 *            the CBC IV
		 */
		public BlowfishCBC(byte[] bfkey, long lInitCBCIV) {
			super(bfkey);

			// store the CBCB IV
			setCBCIV(lInitCBCIV);
		}

		/**
		 * cleans up all critical internals, call this if you don't need an
		 * instance anymore
		 */
		@Override
		public void cleanUp() {
			m_lCBCIV = 0;
			super.cleanUp();
		}

		/**
		 * decrypts a byte buffer (should be aligned to an 8 byte border) to
		 * itself
		 * 
		 * @param buffer
		 *            buffer to decrypt
		 */
		@Override
		public void decrypt(byte[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// decrypt over a temporary 64bit block
				lTemp = byteArrayToLong(buffer, nI);
				lTemp = decryptBlockCBC(lTemp);
				longToByteArray(lTemp, buffer, nI);
			}
		}

		/**
		 * decrypts a byte buffer (should be aligned to an 8 byte border) to
		 * another buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with ciphertext data
		 * @param outbuffer
		 *            buffer to get the plaintext data
		 */
		@Override
		public void decrypt(byte[] inbuffer, byte[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// decrypt a temporary 64bit block
				lTemp = byteArrayToLong(inbuffer, nI);
				lTemp = decryptBlockCBC(lTemp);
				longToByteArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * decrypts an int buffer (should be aligned to a two integer border)
		 * 
		 * @param buffer
		 *            buffer to decrypt
		 */
		@Override
		public void decrypt(int[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// decrypt a temporary 64bit block
				lTemp = intArrayToLong(buffer, nI);
				lTemp = decryptBlockCBC(lTemp);
				longToIntArray(lTemp, buffer, nI);
			}
		}

		/**
		 * decrypts an integer buffer (should be aligned to an two integer
		 * border) to another int buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with ciphertext data
		 * @param outbuffer
		 *            buffer to get the plaintext data
		 */
		@Override
		public void decrypt(int[] inbuffer, int[] outbuffer) {

			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// decrypt a temporary 64bit block
				lTemp = intArrayToLong(inbuffer, nI);
				lTemp = decryptBlockCBC(lTemp);
				longToIntArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * decrypts a long buffer to itself
		 * 
		 * @param buffer
		 *            buffer to decrypt
		 */
		@Override
		public void decrypt(long[] buffer) {
			int nLen = buffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				buffer[nI] = decryptBlockCBC(buffer[nI]);
			}
		}

		/**
		 * decrypts a long buffer to another long buffer (of the same size or
		 * bigger)
		 * 
		 * @param inbuffer
		 *            buffer with ciphertext data
		 * @param outbuffer
		 *            buffer to get the plaintext data
		 */
		@Override
		public void decrypt(long[] inbuffer, long[] outbuffer) {
			int nLen = inbuffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				outbuffer[nI] = decryptBlockCBC(inbuffer[nI]);
			}
		}

		// internal routine to decrypt a block in CBC mode
		private long decryptBlockCBC(long lCipherblock) {
			// save the current block
			long lTemp = lCipherblock;

			// decrypt the block
			lCipherblock = super.decryptBlock(lCipherblock);

			// dechain the block
			lCipherblock ^= m_lCBCIV;

			// set the new CBC IV
			m_lCBCIV = lTemp;

			// return the decrypted block
			return lCipherblock;
		}

		/**
		 * encrypts a byte buffer (should be aligned to an 8 byte border) to
		 * itself
		 * 
		 * @param buffer
		 *            buffer to encrypt
		 */
		@Override
		public void encrypt(byte[] buffer) {

			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// encrypt a temporary 64bit block
				lTemp = byteArrayToLong(buffer, nI);
				lTemp = encryptBlockCBC(lTemp);
				longToByteArray(lTemp, buffer, nI);
			}
		}

		/**
		 * encrypts a byte buffer (should be aligned to an 8 byte border) to
		 * another buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with plaintext data
		 * @param outbuffer
		 *            buffer to get the ciphertext data
		 */
		@Override
		public void encrypt(byte[] inbuffer, byte[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// encrypt a temporary 64bit block
				lTemp = byteArrayToLong(inbuffer, nI);
				lTemp = encryptBlockCBC(lTemp);
				longToByteArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * encrypts an integer buffer (should be aligned to an
		 * 
		 * @param buffer
		 *            buffer to encrypt
		 */
		@Override
		public void encrypt(int[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// encrypt a temporary 64bit block
				lTemp = intArrayToLong(buffer, nI);
				lTemp = encryptBlockCBC(lTemp);
				longToIntArray(lTemp, buffer, nI);
			}
		}

		/**
		 * encrypts an int buffer (should be aligned to an two integer border)
		 * to another int buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with plaintext data
		 * @param outbuffer
		 *            buffer to get the ciphertext data
		 */
		@Override
		public void encrypt(int[] inbuffer, int[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// encrypt a temporary 64bit block
				lTemp = intArrayToLong(inbuffer, nI);
				lTemp = encryptBlockCBC(lTemp);
				longToIntArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * encrypts a long buffer to itself
		 * 
		 * @param buffer
		 *            buffer to encrypt
		 */
		@Override
		public void encrypt(long[] buffer) {
			int nLen = buffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				buffer[nI] = encryptBlockCBC(buffer[nI]);
			}
		}

		/**
		 * encrypts a long buffer to another long buffer (of the same size or
		 * bigger)
		 * 
		 * @param inbuffer
		 *            buffer with plaintext data
		 * @param outbuffer
		 *            buffer to get the ciphertext data
		 */
		@Override
		public void encrypt(long[] inbuffer, long[] outbuffer) {
			int nLen = inbuffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				outbuffer[nI] = encryptBlockCBC(inbuffer[nI]);
			}
		}

		// internal routine to encrypt a block in CBC mode
		private long encryptBlockCBC(long lPlainblock) {
			// chain with the CBC IV
			lPlainblock ^= m_lCBCIV;

			// encrypt the block
			lPlainblock = super.encryptBlock(lPlainblock);

			// the encrypted block is the new CBC IV
			return (m_lCBCIV = lPlainblock);
		}

		/**
		 * get the current CBC IV (for cipher resets)
		 * 
		 * @return current CBC IV
		 */
		public long getCBCIV() {
			return m_lCBCIV;
		}

		/**
		 * get the current CBC IV (for cipher resets)
		 * 
		 * @param dest
		 *            wher eto put current CBC IV in network byte ordered array
		 */
		public void getCBCIV(byte[] dest) {
			longToByteArray(m_lCBCIV, dest, 0);
		}

		/**
		 * set the current CBC IV (for cipher resets)
		 * 
		 * @param newCBCIV
		 *            the new CBC IV in network byte ordered array
		 */
		public void setCBCIV(byte[] newCBCIV) {
			m_lCBCIV = byteArrayToLong(newCBCIV, 0);
		}

		/**
		 * set the current CBC IV (for cipher resets)
		 * 
		 * @param lNewCBCIV
		 *            the new CBC IV
		 */
		public void setCBCIV(long lNewCBCIV) {
			m_lCBCIV = lNewCBCIV;
		}

	}

	/**
	 * implementation of the Blowfish encryption algorithm in ECB mode
	 * 
	 * @author Markus Hahn <markus_hahn@gmx.net>
	 * @version Feburary 14, 2001
	 */
	private static class BlowfishECB {
		/** block size of this cipher (in bytes) */
		public final static int BLOCKSIZE = 8;

		/** maximum possible key length */
		public final static int MAXKEYLENGTH = 56;

		// size of the single boxes
		final static int PBOX_ENTRIES = 18;
		final static int pbox_init[] = {

		0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf,
				0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b };

		final static int SBOX_ENTRIES = 256;
		final static int sbox_init_1[] = {

		0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2,
				0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d,
				0xc25a59b5, 0x9c30d539, 0x2af26013, 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b,
				0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a,
				0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, 0x2ba9c55d, 0x741831f6, 0xce5c3e16,
				0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 0x61d809cc,
				0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3,
				0x83f44239, 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0, 0x6a51a0d2,
				0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176, 0x66ca593e,
				0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62,
				0x363f7706, 0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8,
				0xf6e8def7, 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463, 0x68fb6faf,
				0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807,
				0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe,
				0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 0x53317b48,
				0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0,
				0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 0x9a53e479, 0xb6f84565, 0xd28e49bc,
				0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d,
				0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812,
				0x900df01c, 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1, 0xe5a0cc0f,
				0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705, 0x93cc7314,
				0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d,
				0x2071b35e, 0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2,
				0x02e5b9c5, 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915, 0xd60f573f,
				0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e,
				0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a };
		final static int sbox_init_2[] = {

		0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c,
				0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07,
				0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 0x3c971814,
				0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37,
				0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, 0xd19113f9, 0x7ca92ff6, 0x94324773,
				0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 0xe238cd99,
				0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072,
				0xbcaf89af, 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87, 0x7a584718,
				0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908, 0xdd433b37,
				0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1,
				0xd7a3c76b, 0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1, 0x860e5e0a,
				0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a, 0xc6150eba,
				0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e,
				0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 0xeecea50f,
				0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 0x0334fe1e,
				0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf,
				0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 0x9b540b19, 0x875fa099, 0x95f7997e,
				0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 0x57f584a5,
				0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61,
				0xee7c3c73, 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0, 0xc742f442,
				0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0,
				0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a,
				0x0c55f5ea, 0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460, 0x4085f2a7,
				0xce77326e, 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc, 0x9e447a2e,
				0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e,
				0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7 };
		final static int sbox_init_3[] = {

		0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7,
				0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec,
				0x03bd9785, 0x7fac6dd0, 0x31cb8504, 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da,
				0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c,
				0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 0x1dc9faf7, 0x4b6d1856, 0x26a36631,
				0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a,
				0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c,
				0x9029317c, 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc, 0x07f9c9ee,
				0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60, 0xdff8e8a3,
				0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e,
				0xe6ba0d99, 0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa, 0xc39dfd27,
				0xf33e8d1e, 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, 0xc67b5510,
				0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b,
				0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 0x6842ada7,
				0xc66a2b3b, 0x12754ccc, 0x782ef11c, 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8,
				0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057,
				0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 0x83426b33, 0xf01eab71, 0xb0804187,
				0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3,
				0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591,
				0xc902de4c, 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633, 0xe85a1f02,
				0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe, 0xa1e2ce9b,
				0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28,
				0xc0f586e0, 0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de, 0xebfc7da1,
				0xce591d76, 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, 0xed545578,
				0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce,
				0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0 };
		final static int sbox_init_4[] = {

		0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e,
				0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee,
				0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2,
				0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9,
				0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, 0x80e4a915, 0x87b08601, 0x9b09e6ad,
				0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf,
				0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629,
				0x79132e28, 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd, 0xc3eb9e15,
				0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5, 0x03563482,
				0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2,
				0xfb3e7bce, 0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd,
				0x09072166, 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb, 0xdda26a7e,
				0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b,
				0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428,
				0x95983a1d, 0x06b89fb4, 0xce6ea048, 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 0xbb3a792b,
				0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749,
				0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff,
				0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 0xb6c1075e,
				0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b,
				0x8971f21e, 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d, 0xe54cda54,
				0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623, 0x93a83531,
				0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd,
				0x327a140a, 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c,
				0xcd769c2b, 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060, 0x85cbfe4e,
				0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d,
				0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6 };

		/**
		 * selftest routine, to check e.g. for a valid class file transmission
		 * 
		 * @return true: selftest passed / false: selftest failed
		 */
		public static boolean selfTest() {
			// test vector #1 (checking for the "signed bug")
			byte[] testKey1 = { (byte) 0x1c, (byte) 0x58, (byte) 0x7f, (byte) 0x1c, (byte) 0x13, (byte) 0x92, (byte) 0x4f, (byte) 0xef };
			int[] tv_p1 = { 0x30553228, 0x6d6f295a };
			int[] tv_c1 = { 0x55cb3774, 0xd13ef201 };
			int[] tv_t1 = new int[2];

			// test vector #2 (offical vector by Bruce Schneier)
			String sTestKey2 = "Who is John Galt?";
			byte[] testKey2 = sTestKey2.getBytes();

			int[] tv_p2 = { 0xfedcba98, 0x76543210 };
			int[] tv_c2 = { 0xcc91732b, 0x8022f684 };
			int[] tv_t2 = new int[2];

			// start the tests, check for a proper decryption, too

			BlowfishECB testbf1 = new BlowfishECB(testKey1);

			testbf1.encrypt(tv_p1, tv_t1);

			if ((tv_t1[0] != tv_c1[0]) || (tv_t1[1] != tv_c1[1])) {
				return false;
			}

			testbf1.decrypt(tv_t1);

			if ((tv_t1[0] != tv_p1[0]) || (tv_t1[1] != tv_p1[1])) {
				return false;
			}

			BlowfishECB testbf2 = new BlowfishECB(testKey2);

			testbf2.encrypt(tv_p2, tv_t2);

			if ((tv_t2[0] != tv_c2[0]) || (tv_t2[1] != tv_c2[1])) {
				return false;
			}

			testbf2.decrypt(tv_t2);

			if ((tv_t2[0] != tv_p2[0]) || (tv_t2[1] != tv_p2[1])) {
				return false;
			}

			// all tests passed
			return true;
		}

		// the boxes
		int[] m_pbox;

		int[] m_sbox1;

		int[] m_sbox2;

		int[] m_sbox3;

		int[] m_sbox4;

		/**
		 * default constructor
		 * 
		 * @param bfkey
		 *            key material, up to MAXKEYLENGTH bytes
		 */
		public BlowfishECB(byte[] bfkey) {
			// create the boxes
			int nI;

			m_pbox = new int[PBOX_ENTRIES];

			for (nI = 0; nI < PBOX_ENTRIES; nI++) {
				m_pbox[nI] = pbox_init[nI];
			}

			m_sbox1 = new int[SBOX_ENTRIES];
			m_sbox2 = new int[SBOX_ENTRIES];
			m_sbox3 = new int[SBOX_ENTRIES];
			m_sbox4 = new int[SBOX_ENTRIES];

			for (nI = 0; nI < SBOX_ENTRIES; nI++) {
				m_sbox1[nI] = sbox_init_1[nI];
				m_sbox2[nI] = sbox_init_2[nI];
				m_sbox3[nI] = sbox_init_3[nI];
				m_sbox4[nI] = sbox_init_4[nI];
			}

			// xor the key over the p-boxes

			int nLen = bfkey.length;
			if (nLen == 0)
				return; // such a setup is also valid (zero key "encryption" is
						// possible)
			int nKeyPos = 0;
			int nBuild = 0;
			int nJ;

			for (nI = 0; nI < PBOX_ENTRIES; nI++) {
				for (nJ = 0; nJ < 4; nJ++) {
					nBuild = (nBuild << 8) | (((int) bfkey[nKeyPos]) & 0x0ff);

					if (++nKeyPos == nLen) {
						nKeyPos = 0;
					}
				}
				m_pbox[nI] ^= nBuild;
			}

			// encrypt all boxes with the all zero string
			long lZero = 0;

			// (same as above)
			for (nI = 0; nI < PBOX_ENTRIES; nI += 2) {
				lZero = encryptBlock(lZero);
				m_pbox[nI] = (int) (lZero >>> 32);
				m_pbox[nI + 1] = (int) (lZero & 0x0ffffffffL);
			}
			for (nI = 0; nI < SBOX_ENTRIES; nI += 2) {
				lZero = encryptBlock(lZero);
				m_sbox1[nI] = (int) (lZero >>> 32);
				m_sbox1[nI + 1] = (int) (lZero & 0x0ffffffffL);
			}
			for (nI = 0; nI < SBOX_ENTRIES; nI += 2) {
				lZero = encryptBlock(lZero);
				m_sbox2[nI] = (int) (lZero >>> 32);
				m_sbox2[nI + 1] = (int) (lZero & 0x0ffffffffL);
			}
			for (nI = 0; nI < SBOX_ENTRIES; nI += 2) {
				lZero = encryptBlock(lZero);
				m_sbox3[nI] = (int) (lZero >>> 32);
				m_sbox3[nI + 1] = (int) (lZero & 0x0ffffffffL);
			}
			for (nI = 0; nI < SBOX_ENTRIES; nI += 2) {
				lZero = encryptBlock(lZero);
				m_sbox4[nI] = (int) (lZero >>> 32);
				m_sbox4[nI + 1] = (int) (lZero & 0x0ffffffffL);
			}
		}

		/**
		 * to clear data in the boxes before an instance is freed
		 */
		public void cleanUp() {
			int nI;

			for (nI = 0; nI < PBOX_ENTRIES; nI++) {
				m_pbox[nI] = 0;
			}

			for (nI = 0; nI < SBOX_ENTRIES; nI++) {
				m_sbox1[nI] = m_sbox2[nI] = m_sbox3[nI] = m_sbox4[nI] = 0;
			}
		}

		/**
		 * decrypts a byte buffer (should be aligned to an 8 byte border) to
		 * itself
		 * 
		 * @param buffer
		 *            buffer to decrypt
		 */
		public void decrypt(byte[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// decrypt over a temporary 64bit block
				lTemp = byteArrayToLong(buffer, nI);
				lTemp = decryptBlock(lTemp);
				longToByteArray(lTemp, buffer, nI);
			}
		}

		/**
		 * decrypts a byte buffer (should be aligned to an 8 byte border) to
		 * another byte buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with ciphertext data
		 * @param outbuffer
		 *            buffer to get the plaintext data
		 */
		public void decrypt(byte[] inbuffer, byte[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// decrypt a temporary 64bit block
				lTemp = byteArrayToLong(inbuffer, nI);
				lTemp = decryptBlock(lTemp);
				longToByteArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * decrypts an int buffer (should be aligned to an two integer border)
		 * 
		 * @param buffer
		 *            buffer to decrypt
		 */
		public void decrypt(int[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// decrypt a temporary 64bit block
				lTemp = intArrayToLong(buffer, nI);
				lTemp = decryptBlock(lTemp);
				longToIntArray(lTemp, buffer, nI);
			}
		}

		/**
		 * decrypts an integer buffer (should be aligned to an two integer
		 * border) to another int buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with ciphertext data
		 * @param outbuffer
		 *            buffer to get the plaintext data
		 */
		public void decrypt(int[] inbuffer, int[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// decrypt a temporary 64bit block
				lTemp = intArrayToLong(inbuffer, nI);
				lTemp = decryptBlock(lTemp);
				longToIntArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * decrypts a long buffer to itself
		 * 
		 * @param buffer
		 *            buffer to decrypt
		 */
		public void decrypt(long[] buffer) {

			int nLen = buffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				buffer[nI] = decryptBlock(buffer[nI]);
			}
		}

		/**
		 * decrypts a long buffer to another long buffer (of the same size or
		 * bigger)
		 * 
		 * @param inbuffer
		 *            buffer with ciphertext data
		 * @param outbuffer
		 *            buffer to get the plaintext data
		 */
		public void decrypt(long[] inbuffer, long[] outbuffer) {
			int nLen = inbuffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				outbuffer[nI] = decryptBlock(inbuffer[nI]);
			}
		}

		// internal routine to decrypt a 64bit block
		protected long decryptBlock(long lCipherBlock) {
			// (same as above)

			int nHi = longHi32(lCipherBlock);
			int nLo = longLo32(lCipherBlock);

			nHi ^= m_pbox[17];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[16];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[15];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[14];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[13];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[12];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[11];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[10];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[9];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[8];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[7];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[6];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[5];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[4];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[3];
			nLo ^= (((m_sbox1[nHi >>> 24] + m_sbox2[(nHi >>> 16) & 0x0ff]) ^ m_sbox3[(nHi >>> 8) & 0x0ff]) + m_sbox4[nHi & 0x0ff])
					^ m_pbox[2];
			nHi ^= (((m_sbox1[nLo >>> 24] + m_sbox2[(nLo >>> 16) & 0x0ff]) ^ m_sbox3[(nLo >>> 8) & 0x0ff]) + m_sbox4[nLo & 0x0ff])
					^ m_pbox[1];

			return makeLong(nHi, nLo ^ m_pbox[0]);
		}

		/**
		 * encrypts a byte buffer (should be aligned to an 8 byte border) to
		 * itself
		 * 
		 * @param buffer
		 *            buffer to encrypt
		 */
		public void encrypt(byte[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// encrypt a temporary 64bit block
				lTemp = byteArrayToLong(buffer, nI);
				lTemp = encryptBlock(lTemp);
				longToByteArray(lTemp, buffer, nI);
			}
		}

		/**
		 * Encrypts a byte buffer (should be aligned to an 8 byte border) to
		 * another buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with plaintext data
		 * @param outbuffer
		 *            buffer to get the ciphertext data
		 */
		public void encrypt(byte[] inbuffer, byte[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 8) {
				// encrypt a temporary 64bit block
				lTemp = byteArrayToLong(inbuffer, nI);
				lTemp = encryptBlock(lTemp);
				longToByteArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * encrypts an int buffer (should be aligned to a two integer border)
		 * 
		 * @param buffer
		 *            buffer to encrypt
		 */
		public void encrypt(int[] buffer) {
			int nLen = buffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// encrypt a temporary 64bit block
				lTemp = intArrayToLong(buffer, nI);
				lTemp = encryptBlock(lTemp);
				longToIntArray(lTemp, buffer, nI);
			}
		}

		/**
		 * encrypts an integer buffer (should be aligned to an two integer
		 * border) to another int buffer (of the same size or bigger)
		 * 
		 * @param inbuffer
		 *            buffer with plaintext data
		 * @param outbuffer
		 *            buffer to get the ciphertext data
		 */
		public void encrypt(int[] inbuffer, int[] outbuffer) {
			int nLen = inbuffer.length;
			long lTemp;
			for (int nI = 0; nI < nLen; nI += 2) {
				// encrypt a temporary 64bit block
				lTemp = intArrayToLong(inbuffer, nI);
				lTemp = encryptBlock(lTemp);
				longToIntArray(lTemp, outbuffer, nI);
			}
		}

		/**
		 * encrypts a long buffer to itself
		 * 
		 * @param buffer
		 *            buffer to encrypt
		 */
		public void encrypt(long[] buffer) {
			int nLen = buffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				buffer[nI] = encryptBlock(buffer[nI]);
			}
		}

		/**
		 * encrypts a long buffer to another long buffer (of the same size or
		 * bigger)
		 * 
		 * @param inbuffer
		 *            buffer with plaintext data
		 * @param outbuffer
		 *            buffer to get the ciphertext data
		 */
		public void encrypt(long[] inbuffer, long[] outbuffer) {
			int nLen = inbuffer.length;
			for (int nI = 0; nI < nLen; nI++) {
				outbuffer[nI] = encryptBlock(inbuffer[nI]);
			}
		}

		// internal routine to encrypt a 64bit block
		protected long encryptBlock(long lPlainBlock) {
			// split the block in two 32 bit halves

			int nHi = longHi32(lPlainBlock);
			int nLo = longLo32(lPlainBlock);

			// encrypt the block, gain more speed by unrooling the loop
			// (we avoid swapping by using nHi and nLo alternating at
			// odd an even loop nubers) and using local references

			int[] sbox1 = m_sbox1;
			int[] sbox2 = m_sbox2;
			int[] sbox3 = m_sbox3;
			int[] sbox4 = m_sbox4;

			int[] pbox = m_pbox;

			nHi ^= pbox[0];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[1];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[2];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[3];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[4];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[5];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[6];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[7];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[8];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[9];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[10];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[11];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[12];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[13];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[14];
			nLo ^= (((sbox1[nHi >>> 24] + sbox2[(nHi >>> 16) & 0x0ff]) ^ sbox3[(nHi >>> 8) & 0x0ff]) + sbox4[nHi & 0x0ff]) ^ pbox[15];
			nHi ^= (((sbox1[nLo >>> 24] + sbox2[(nLo >>> 16) & 0x0ff]) ^ sbox3[(nLo >>> 8) & 0x0ff]) + sbox4[nLo & 0x0ff]) ^ pbox[16];

			// finalize, cross and return the reassembled block

			return makeLong(nHi, nLo ^ pbox[17]);
		}
	}

	// our table for binhex conversion
	final static char[] HEXTAB = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

	private static Random m_rndGen = new Random();

	// Internal routine for string encryption

	/**
	 * converts a binhex string back into a byte array (invalid codes will be
	 * skipped)
	 * 
	 * @param sBinHex
	 *            binhex string
	 * @param data
	 *            the target array
	 * @param nSrcPos
	 *            from which character in the string the conversion should
	 *            begin, remember that (nSrcPos modulo 2) should equals 0
	 *            normally
	 * @param nDstPos
	 *            to store the bytes from which position in the array
	 * @param nNumOfBytes
	 *            number of bytes to extract
	 * @return number of extracted bytes
	 */
	private static int binHexToBytes(String sBinHex, byte[] data, int nSrcPos, int nDstPos, int nNumOfBytes) {
		// check for correct ranges
		int nStrLen = sBinHex.length();

		int nAvailBytes = (nStrLen - nSrcPos) >> 1;
		if (nAvailBytes < nNumOfBytes) {
			nNumOfBytes = nAvailBytes;
		}

		int nOutputCapacity = data.length - nDstPos;
		if (nNumOfBytes > nOutputCapacity) {
			nNumOfBytes = nOutputCapacity;
		}

		// convert now
		int nResult = 0;
		for (int nI = 0; nI < nNumOfBytes; nI++) {
			byte bActByte = 0;
			boolean blConvertOK = true;
			for (int nJ = 0; nJ < 2; nJ++) {
				bActByte <<= 4;
				char cActChar = sBinHex.charAt(nSrcPos++);

				if ((cActChar >= 'a') && (cActChar <= 'f')) {
					bActByte |= (byte) (cActChar - 'a') + 10;
				} else {
					if ((cActChar >= '0') && (cActChar <= '9')) {
						bActByte |= (byte) (cActChar - '0');
					} else {
						blConvertOK = false;
					}
				}
			}
			if (blConvertOK) {
				data[nDstPos++] = bActByte;
				nResult++;
			}
		}

		return nResult;
	}

	/**
	 * gets bytes from an array into a long
	 * 
	 * @param buffer
	 *            where to get the bytes
	 * @param nStartIndex
	 *            index from where to read the data
	 * @return the 64bit integer
	 */
	private static long byteArrayToLong(byte[] buffer, int nStartIndex) {
		return (((long) buffer[nStartIndex]) << 56) | (((long) buffer[nStartIndex + 1] & 0x0ffL) << 48)
				| (((long) buffer[nStartIndex + 2] & 0x0ffL) << 40) | (((long) buffer[nStartIndex + 3] & 0x0ffL) << 32)
				| (((long) buffer[nStartIndex + 4] & 0x0ffL) << 24) | (((long) buffer[nStartIndex + 5] & 0x0ffL) << 16)
				| (((long) buffer[nStartIndex + 6] & 0x0ffL) << 8) | ((long) buffer[nStartIndex + 7] & 0x0ff);
	}

	/**
	 * converts a byte array into an UNICODE string
	 * 
	 * @param data
	 *            the byte array
	 * @param nStartPos
	 *            where to begin the conversion
	 * @param nNumOfBytes
	 *            number of bytes to handle
	 * @return the string
	 */
	private static String byteArrayToUNCString(byte[] data, int nStartPos, int nNumOfBytes) {
		// we need two bytes for every character
		nNumOfBytes &= ~1;

		// enough bytes in the buffer?
		int nAvailCapacity = data.length - nStartPos;

		if (nAvailCapacity < nNumOfBytes) {
			nNumOfBytes = nAvailCapacity;
		}

		StringBuilder sbuf = new StringBuilder();
		sbuf.setLength(nNumOfBytes >> 1);

		int nSBufPos = 0;

		while (nNumOfBytes > 0) {
			sbuf.setCharAt(nSBufPos++, (char) (((int) data[nStartPos] << 8) | ((int) data[nStartPos + 1] & 0x0ff)));
			nStartPos += 2;
			nNumOfBytes -= 2;
		}

		return sbuf.toString();
	}

	/**
	 * converts a byte array to a binhex string
	 * 
	 * @param data
	 *            the byte array
	 * @param nStartPos
	 *            start index where to get the bytes
	 * @param nNumOfBytes
	 *            number of bytes to convert
	 * @return the binhex string
	 */
	private static String bytesToBinHex(byte[] data, int nStartPos, int nNumOfBytes) {
		StringBuilder sbuf = new StringBuilder();
		sbuf.setLength(nNumOfBytes << 1);

		int nPos = 0;
		for (int nI = 0; nI < nNumOfBytes; nI++) {
			sbuf.setCharAt(nPos++, HEXTAB[(data[nI + nStartPos] >> 4) & 0x0f]);
			sbuf.setCharAt(nPos++, HEXTAB[data[nI + nStartPos] & 0x0f]);
		}
		return sbuf.toString();
	}

	/**
	 * converts values from an integer array to a long
	 * 
	 * @param buffer
	 *            where to get the bytes
	 * @param nStartIndex
	 *            index from where to read the data
	 * @return the 64bit integer
	 */
	private static long intArrayToLong(int[] buffer, int nStartIndex) {
		return (((long) buffer[nStartIndex]) << 32) | (((long) buffer[nStartIndex + 1]) & 0x0ffffffffL);
	}

	/**
	 * gets the higher 32 bits of a long
	 * 
	 * @param lVal
	 *            the long integer
	 * @return higher 32 bits
	 */
	private static int longHi32(long lVal) {
		return (int) ((lVal >>> 32));
	}

	/**
	 * gets the lower 32 bits of a long
	 * 
	 * @param lVal
	 *            the long integer
	 * @return lower 32 bits
	 */
	private static int longLo32(long lVal) {
		return (int) lVal;
	}

	/**
	 * converts a long o bytes which are put into a given array
	 * 
	 * @param lValue
	 *            the 64bit integer to convert
	 * @param buffer
	 *            the target buffer
	 * @param nStartIndex
	 *            where to place the bytes in the buffer
	 */
	private static void longToByteArray(long lValue, byte[] buffer, int nStartIndex) {
		buffer[nStartIndex] = (byte) (lValue >>> 56);
		buffer[nStartIndex + 1] = (byte) ((lValue >>> 48) & 0x0ff);
		buffer[nStartIndex + 2] = (byte) ((lValue >>> 40) & 0x0ff);
		buffer[nStartIndex + 3] = (byte) ((lValue >>> 32) & 0x0ff);
		buffer[nStartIndex + 4] = (byte) ((lValue >>> 24) & 0x0ff);
		buffer[nStartIndex + 5] = (byte) ((lValue >>> 16) & 0x0ff);
		buffer[nStartIndex + 6] = (byte) ((lValue >>> 8) & 0x0ff);
		buffer[nStartIndex + 7] = (byte) lValue;
	}

	/**
	 * converts a long to integers which are put into a given array
	 * 
	 * @param lValue
	 *            the 64bit integer to convert
	 * @param buffer
	 *            the target buffer
	 * @param nStartIndex
	 *            where to place the bytes in the buffer
	 */
	private static void longToIntArray(long lValue, int[] buffer, int nStartIndex) {
		buffer[nStartIndex] = (int) (lValue >>> 32);
		buffer[nStartIndex + 1] = (int) lValue;
	}

	/**
	 * makes a long from two integers (treated unsigned)
	 * 
	 * @param nLo
	 *            lower 32bits
	 * @param nHi
	 *            higher 32bits
	 * @return the built long
	 */
	private static long makeLong(int nLo, int nHi) {
		return (((long) nHi << 32) | ((long) nLo & 0x00000000ffffffffL));
	}

	private BlowfishCBC m_bfish;

	/**
	 * Creates a new Blowfish object using the specified key (oversized password
	 * will be cut).
	 * 
	 * @param password
	 *            the password (treated as a real unicode array)
	 */
	public Blowfish(String password) {
		// hash down the password to a 160bit key
		MessageDigest digest = null;
		try {
			digest = MessageDigest.getInstance("SHA1");
			digest.update(password.getBytes());
		} catch (Exception e) {
			e.printStackTrace();
		}

		// setup the encryptor (use a dummy IV)
		m_bfish = new BlowfishCBC(digest.digest(), 0);
		digest.reset();
	}

	/**
	 * decrypts a hexbin string (handling is case sensitive)
	 * 
	 * @param sCipherText
	 *            hexbin string to decrypt
	 * @return decrypted string (null equals an error)
	 */
	public String decryptString(String sCipherText) {
		// get the number of estimated bytes in the string (cut off broken
		// blocks)
		int nLen = (sCipherText.length() >> 1) & ~7;

		// does the given stuff make sense (at least the CBC IV)?
		if (nLen < BlowfishECB.BLOCKSIZE)
			return null;

		// get the CBC IV
		byte[] cbciv = new byte[BlowfishCBC.BLOCKSIZE];
		int nNumOfBytes = binHexToBytes(sCipherText, cbciv, 0, 0, BlowfishCBC.BLOCKSIZE);
		if (nNumOfBytes < BlowfishCBC.BLOCKSIZE)
			return null;

		// something left to decrypt?
		nLen -= BlowfishCBC.BLOCKSIZE;
		if (nLen == 0) {
			return "";
		}

		// get all data bytes now
		byte[] buf = new byte[nLen];

		nNumOfBytes = binHexToBytes(sCipherText, buf, BlowfishCBC.BLOCKSIZE * 2, 0, nLen);

		// we cannot accept broken binhex sequences due to padding
		// and decryption
		if (nNumOfBytes < nLen) {
			return null;
		}

		synchronized (m_bfish) {
			// (got it)
			m_bfish.setCBCIV(cbciv);

			// decrypt the buffer
			m_bfish.decrypt(buf);
		}

		// get the last padding byte
		int nPadByte = (int) buf[buf.length - 1] & 0x0ff;

		// ( try to get all information if the padding doesn't seem to be
		// correct)
		if ((nPadByte > 8) || (nPadByte < 0)) {
			nPadByte = 0;
		}

		// calculate the real size of this message
		nNumOfBytes -= nPadByte;
		if (nNumOfBytes < 0) {
			return "";
		}

		// success
		return byteArrayToUNCString(buf, 0, nNumOfBytes);
	}

	/**
	 * destroys (clears) the encryption engine, after that the instance is not
	 * valid anymore
	 */
	public void destroy() {
		m_bfish.cleanUp();
	}

	/**
	 * Encrypts a string (treated in UNICODE) using the standard Java random
	 * generator, which isn't that great for creating IVs
	 * 
	 * @param sPlainText
	 *            string to encrypt
	 * @return encrypted string in binhex format
	 */
	public String encryptString(String sPlainText) {
		// get the IV
		long lCBCIV;
		synchronized (m_rndGen) {
			lCBCIV = m_rndGen.nextLong();
		}

		// map the call;
		return encStr(sPlainText, lCBCIV);
	}

	private String encStr(String sPlainText, long lNewCBCIV) {
		// allocate the buffer (align to the next 8 byte border plus padding)
		int nStrLen = sPlainText.length();
		byte[] buf = new byte[((nStrLen << 1) & 0xfffffff8) + 8];

		// copy all bytes of the string into the buffer (use network byte order)
		int nI;
		int nPos = 0;
		for (nI = 0; nI < nStrLen; nI++) {
			char cActChar = sPlainText.charAt(nI);
			buf[nPos++] = (byte) ((cActChar >> 8) & 0x0ff);
			buf[nPos++] = (byte) (cActChar & 0x0ff);
		}

		// pad the rest with the PKCS5 scheme
		byte bPadVal = (byte) (buf.length - (nStrLen << 1));
		while (nPos < buf.length) {
			buf[nPos++] = bPadVal;
		}

		synchronized (m_bfish) {
			// create the encryptor
			m_bfish.setCBCIV(lNewCBCIV);

			// encrypt the buffer
			m_bfish.encrypt(buf);
		}

		// return the binhex string
		byte[] newCBCIV = new byte[BlowfishCBC.BLOCKSIZE];
		longToByteArray(lNewCBCIV, newCBCIV, 0);

		return bytesToBinHex(newCBCIV, 0, BlowfishCBC.BLOCKSIZE) + bytesToBinHex(buf, 0, buf.length);
	}

}
